Manual

XUBA Series 29667 V1
Operating Manual
16
Temperatures of touchable hot surfaces
BS EN 13202:2000 gives the recommended maximum surface temperatures for dif-
ferent materials at various exposure times (see below)
Your Grant ultrasonic cleaning bath can be set so that the cleaning fluid is up to 70°C.
This means that parts of your ultrasonic cleaner will be above the recommended max-
imum temperature.
If you operate your ultrasonic cleaner at temperatures above the recommended max-
imum, then Grant advise that you conduct a risk assessment, and if appropriate fix a
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The following limit values are based on the harmonized standards -
 BS EN 13202:2000 Ergonomics of the thermal environment - Temperatures
of touchable hot surfaces - Guidance for establishing surface temperature
limit values in production standards with the aid of -
 EN 563: 1994 Safety of machinery - Temperatures of touchable surfaces -
Ergonomics data to establish temperature limit values for hot surfaces
Materials/time-temp*
1 sec
4 sec
10 sec
10 min
8 hr
uncoated metal
65°C
58°C
55°C
48°C
43°C
painted metal
83°C
64°C
55°C
48°C
43°C
enamelled metals
74°C
60°C
56°C
48°C
43°C
ceramics, glass, stone
80°C
70°C
66°C
48°C
43°C
plastics
85°C
74°C
70°C
48°C
43°C
wood
110°C
93°C
89°C
48°C
43°C
Time
Contact
Part
1 sec
accidental contact
Outer case, tank flange
4 sec
parts held for short periods
knobs, switches
10 sec
parts continuously held in normal
use
handles
10 min
prolonged use
handles
8 hr
continuous use
handles